So, I started this process at the beginning of spring. I got 6 chickens that seemed perfectly healthy. I got them home and noticed two seemed lethargic, which can happen with transport etc. I dipped their beaks and made sure temp was exact. Two days later they were still lethargic and now had runny noses and what sounded like fluid in their lungs. Not knowing what to do, or that I could try antibiotics they died three days later. The remaining chicks seemed fine for about two weeks until they all started w the same symptoms. I then have them tetracycline in their water but it didn't help so they got a shot which cleared it up. I decided that they were healthy enough to replace the chicks that died and got a few more. Needless to say, one chick got sour crop (figured out too late and died), two chicks now have that awful smell, one is sneezing with a goopy eye and one now has bloody poop!!! I am at a loss. I give them fresh water everyday with probiotics, they have a dry coop and roam on a large property. I ordered the tylan 50 injectable, but I don't know if it will help clear up all the issues going on!! Help please!!!!!